5-58 ES45 Owner's Guide
5.14.10 cpu_enabled
The cpu_enabled environment variable sets a bit mask that enables or
disables specific CPUs on a multiprocessor system.
Disabling a CPU may be necessary if a number of errors are reported on a spe-
cific CPU. These errors might be displayed during power-up or might be dis-
played with the show fru or show config command.
Disabled CPUs are prevented from running the console or the operating system.
Bit 0 of the mask corresponds to CPU 0, bit 1 to CPU 1, and so on. A zero in the
bit mask prevents the corresponding CPU from running; a one allows it to run.
The bit mask is expressed as a hexadecimal value.
The value of cpu_enabled takes effect only after you reset the system by press-
ing the Reset button or by issuing the init command.
The cpu_enabled environment variable is typically used in benchmark testing.
NOTE: The primary CPU cannot be disabled. The primary CPU is the lowest
numbered working CPU.
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